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A student ignites 1.834 g of magnesium in air using a Bunsen burner in the lab. Calculate the mass theoretical yield of MgO obtainable in the experiment.
The "pop" bottle demonstration requires that hydrogen and oxygen gas mixture be ignited by a flame. True or False: This means that the reaction of hydrogen gas and oxygen gas to form water is endothermic. Support the answer.
Identify all of the spectator ions in the precipitation reaction below. Ca^2+ (aq) + 2Br^-(aq) + 2Li^+ (aq) + CO3^2- (aq) arrow to CaCO3 (s) + 2Li^+ (aq) + 2Br^- (aq)
a, The height of Niagra Falls is 51 meters. Calculate the Potential Energy of 1g of water at the top of the falls relative to the ground level. b, What would be the increase in temperature of the water if all Kinetic Energy were converted to heat.
Draw graphs representing Boyle's law, Charles's law, and Gay-Lussac's law for a fixed amount of gas. Make sure that you label each axis and state the assumptions for each law-that is, the variable(s) that is (are) held constant for each law.
How many hours will it take to produce 78.0 g of Al metal by the reduction of Al3+ in an electrolytic cell with a current of 2.00 Amperes?
Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons.
Calculate the osmotic pressure of a solution containing 24.9g of glycerin (C3H8O3) in 238.0mL of solution at 300 K.
1.) The next three questions are related to the analysis of mercury (200.59 g/mol) in the sample of mercuric ointment described here.A 4.031 g sample of a mercuric ointment is digested in nitric acid. After dilution, the Hg2+is titrated with 32.50 mL..
during photosynthesis an electron is believed to travel 25 angstroms within one picoseconds. the uncertainty in time
In the gravimetric determination of Zn^2+, 2.2024 g sample was dissolved and made up to volume in a 100.0 mL flask. A 10.0 mL aliquot were precipitated by adding a soluble pyrophosphate salt and heating the precipitate to a solid Zn2P2O7 (304.728 ..
A piece of iron 12 mm by 15 mm has a mass of 3.6 grams. Explain what is the thickness of the piece of iron, in mm given that the density of iron is 7.8 g/cc
carbonic acid solution with [H_2CO_3] = 0.00735 M is titrated with 0.100 M KOH. Determine the pH of the solution when 70.00mL of OH have been added.
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